Epson Perfection 4990 Manual del usuario - Página 10

User's Manual

• the incorrect TWAIN driver has been selected

Each scanner model requires a specific TWAIN driver. If the TWAIN driver does not match the

scanner model, the AFHCAN software will bring up the Scan Failed message when you attempt

to scan.

The correct TWAIN driver is normally installed and tested when the scanner is installed.

Normally it should not need to be changed. However, if the Scan Failed message appears, you

will be invited to open a pop up window allowing you to select a different TWAIN driver.

Note: Selecting a new TWAIN driver typically would apply only

when a different model scanner is being installed.

Table 2 lists the scanner models and associated TWAIN drivers. (Other TWAIN driver options

may appear in the window that may not apply to scanners. Disregard any drivers not listed in

Table 2.)

Table 2

Scanner models and their TWAIN drivers

Scanner

TWAIN Driver

1640

5.71A (Rev F)

1650

5.71A (Rev F)

4490

4990

Note 1: These specific drivers were listed on the EPSON website, and were available for download, during the time when

this document was in development. Other versions may be included with your software.

1.1.2 General Descriptions of Scanner Hardware

Figures 2 through 4 show the main hardware features of the Model 1640.

PUB-119 Rev B.doc

Scanner

2.76A

2.68A

Pop-Up Text

EPSON TWAIN 5 5.71 (32-22)

EPSON Perfection 4490 2.71 (32-22)

EPSON Perfection 4990 2.68 (32-32)

Epson Perfection